Join the Trigon Club
It's free, and it's where everything good lives. One sign-up unlocks the lot.
What you get
The free books & app
The free mini book now, the free mini app the moment it's ready, and a bigger members' book to download today.
All the answers
The full solutions to every puzzle — not just the easy ones — so you're never stuck for long.
The leaderboard
Save your streak across all your devices, climb the leaderboard, and take part in members' competitions.
And when the full app arrives, you get it at half price — a members' perk.